English verb conjugation
MUST COUNTERATTACK

Regular verb: counterattack - counterattacked - counterattacked

Affirmation

Simple form	V-ing form
I must counterattack you must counterattack he must counterattack we must counterattack you must counterattack they must counterattack	I must be counterattacking you must be counterattacking he must be counterattacking we must be counterattacking you must be counterattacking they must be counterattacking
Perfect	V-ing perfect
I must have counterattacked you must have counterattacked he must have counterattacked we must have counterattacked you must have counterattacked they must have counterattacked	I must have been counterattacking you must have been counterattacking he must have been counterattacking we must have been counterattacking you must have been counterattacking they must have been counterattacking

Negation

Simple form	V-ing form
I mustn't counterattack you mustn't counterattack he mustn't counterattack we mustn't counterattack you mustn't counterattack they mustn't counterattack	I mustn't be counterattacking you mustn't be counterattacking he mustn't be counterattacking we mustn't be counterattacking you mustn't be counterattacking they mustn't be counterattacking
Perfect	V-ing perfect
I mustn't have counterattacked you mustn't have counterattacked he mustn't have counterattacked we mustn't have counterattacked you mustn't have counterattacked they mustn't have counterattacked	I mustn't have been counterattacking you mustn't have been counterattacking he mustn't have been counterattacking we mustn't have been counterattacking you mustn't have been counterattacking they mustn't have been counterattacking

Interrogative form

Simple form	V-ing form
must I counterattack? must you counterattack? must he counterattack? must we counterattack? must you counterattack? must they counterattack?	must I be counterattacking? must you be counterattacking? must he be counterattacking? must we be counterattacking? must you be counterattacking? must they be counterattacking?
Perfect	V-ing perfect
must I have counterattacked? must you have counterattacked? must he have counterattacked? must we have counterattacked? must you have counterattacked? must they have counterattacked?	must I have been counterattacking? must you have been counterattacking? must he have been counterattacking? must we have been counterattacking? must you have been counterattacking? must they have been counterattacking?

Interro-negative form

Simple form	V-ing form
mustn't I counterattack? mustn't you counterattack? mustn't he counterattack? mustn't we counterattack? mustn't you counterattack? mustn't they counterattack?	mustn't I be counterattacking? mustn't you be counterattacking? mustn't he be counterattacking? mustn't we be counterattacking? mustn't you be counterattacking? mustn't they be counterattacking?
Perfect	V-ing perfect
mustn't I have counterattacked? mustn't you have counterattacked? mustn't he have counterattacked? mustn't we have counterattacked? mustn't you have counterattacked? mustn't they have counterattacked?	mustn't I have been counterattacking? mustn't you have been counterattacking? mustn't he have been counterattacking? mustn't we have been counterattacking? mustn't you have been counterattacking? mustn't they have been counterattacking?